the NLF become more radical Marxist and they split from the Egyptians. Asnag formed his own military organization, FLOSY, in order to counter the NLF. The NLF quickly denounced Asnag and FLOSY as Imperialist forces under control of Nasser and in addition to attacking the British also engaged FLOSY in combat. By February 1967 the British could no longer control or protect its bases in Aden and announced it was leaving the country, against American wishes. In January 1967, there were mass riots by NLF and FLOSY supporters in the old Arab quarter of Aden town, which continued until mid February, despite the intervention of British troops. During the period there were many attacks on the troops, and an Aden Airways Douglas DC-3 plane was destroyed in the air with no survivors. At the same time, the members of FLOSY and the NLF were also killing each other in large numbers. On 20 June 1967, there was a mutiny in the Federation of South Arabia Army, which also spread to the police. Order was restored by the British, mainly due to the efforts of the 1st Battalion Argyll and Sutherland Highlanders, under the command of Lt-Col. Colin Campbell Mitchell. Nevertheless, deadly guerrilla attacks particularly by the NLF soon resumed against British forces. Nasser threw its weight behind FLOSY and arrested the head of the NLF who was living at the time in Egypt. Officially FLOSY and the NLF refused to talk to the leaving British forces as they didn't want to be seen associated with the British government. However unofficial secret talks were held between the British and the NLF who conspired to defeat FLOSY so that the much hated Nasser supported FLOSY would be defeated. With the British withdrawing from Aden by the end of November 1967, earlier than had been planned by British Prime Minister Harold Wilson and without an agreement on the succeeding governance. When the last governor of Aden, Sir Humphrey Trevelyan, left the country he had no one to give the keys to but as a point of respect had the government house repainted for whoever emerged victorious. Victory On November 30, 1967 the Federation of South Arabia ceased to exist when the People's Republic of South Yemen was proclaimed. In 1967 Israel defeated Egypt in the Six-Day War thus obliging Egypt to evacuate its troops from Yemen. FLOSY, now without any military support from